The "security processor", sometimes referred to as "wireless trusted module" or "generic encrypt unit" is a low-power core present on MMP2, that has nothing to do with security, wireless, trust or encryption. On an OLPC machine it runs CForth and serves as a keyboard controller: http://dev.laptop.org/git/users/wmb/cforth/tree/src/app/arm-xo-1.75/ps2.fth The register address was obtained from the OLPC kernel, since the datasheet seems to be the Marvell's most important business secret. Signed-off-by: Lubomir Rintel <lkundrak@xxxxx> --- drivers/clk/mmp/clk-of-mmp2.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/clk/mmp/clk-of-mmp2.c b/drivers/clk/mmp/clk-of-mmp2.c index 0fc75c395957..1da50f827a15 100644 --- a/drivers/clk/mmp/clk-of-mmp2.c +++ b/drivers/clk/mmp/clk-of-mmp2.c @@ -53,6 +53,7 @@ #define APMU_DISP1 0x110 #define APMU_CCIC0 0x50 #define APMU_CCIC1 0xf4 +#define APMU_SP 0x68 #define MPMU_UART_PLL 0x14 struct mmp2_clk_unit { @@ -209,6 +210,8 @@ static struct mmp_clk_mix_config ccic1_mix_config = { .reg_info = DEFINE_MIX_REG_INFO(4, 16, 2, 6, 32), }; +static DEFINE_SPINLOCK(sp_lock); + static struct mmp_param_mux_clk apmu_mux_clks[] = { {MMP2_CLK_DISP0_MUX, "disp0_mux", disp_parent_names, ARRAY_SIZE(disp_parent_names), CLK_SET_RATE_PARENT, APMU_DISP0, 6, 2, 0, &disp0_lock}, {MMP2_CLK_DISP1_MUX, "disp1_mux", disp_parent_names, ARRAY_SIZE(disp_parent_names), CLK_SET_RATE_PARENT, APMU_DISP1, 6, 2, 0, &disp1_lock}, @@ -239,6 +242,7 @@ static struct mmp_param_gate_clk apmu_gate_clks[] = { {MMP2_CLK_CCIC1, "ccic1_clk", "ccic1_mix_clk", CLK_SET_RATE_PARENT, APMU_CCIC1, 0x1b, 0x1b, 0x0, 0, &ccic1_lock}, {MMP2_CLK_CCIC1_PHY, "ccic1_phy_clk", "ccic1_mix_clk", CLK_SET_RATE_PARENT, APMU_CCIC1, 0x24, 0x24, 0x0, 0, &ccic1_lock}, {MMP2_CLK_CCIC1_SPHY, "ccic1_sphy_clk", "ccic1_sphy_div", CLK_SET_RATE_PARENT, APMU_CCIC1, 0x300, 0x300, 0x0, 0, &ccic1_lock}, + {MMP2_CLK_SP, "sp_clk", NULL, CLK_SET_RATE_PARENT, APMU_SP, 0x1b, 0x1b, 0x0, 0, &sp_lock}, }; static void mmp2_axi_periph_clk_init(struct mmp2_clk_unit *pxa_unit) -- 2.17.1
